Improvement in feed-mills



` Z. S. CRACRAFT. Improvement in Feed Mills.

N0. ]20,'52. l I Patented`0ct.`31,1871.

UNITED STATES PATENT OFFICE.

ZADOK S. ORAGRAFT, OF OTTAWA, ILLINOIS, ASSIGNOR TO HIMSELF AND WILLIAMSTORMONT, OF SAME PLACE.

IMPROVEMENT IN FEED-MILLS.

Specification forming part of Letters Patent No. 120,562, dated October31, 1871.

To all whom it may concern:

Be it known that I, ZADOK S. ORACRAFT, of Ottawa, in the county of LaSalle and State of Illinois, have invented certain new and usefulImprovements in Feed-Mills; and I do hereby declare that the followingis a full, clear, and exact description thereof, reference being had tothe accompanying drawing and to the letters of reference marked thereon,which form a part of this specification.

The nature of my invention consists in the construction and arrangementof a feed-mill, as will be hereinafter more fully set forth.

In order to enable others skilled in the art to which my inventionappertains to make and use the same, I will now proceed to describe itsconstruction and operation, referring to the annexed drawing, in which-Figure 1 is a plan view, and Fig. 2 an end view of my machine.

A represents the frame of my mill, at each end of which is ajournal-box, a. Through each of these is passed a journal, b, withscrew-threads upon its inner end, which is screwed into a hub, B, andthe two hubs connected by a central shaft, O. Upon the inner face ofeach hub B is firmly secured a burr, D, and as the power used isconnected by a belt with a pulley upon one of the journals b the burrs DD are made to revolve together. E E represent two beams or bars laidacross the frame A and attached to the same by means of screws d dpassing through elongated slots in the ends of said beams, as shown inFig. l. Upon and between the beams EE is arranged the hopper G, and onthe outer sides of the beams are secured the stationary burrs D D', thecentral shaft O passing through feed-openings in their centers. Thehopper thus feeds both sets of burrs. The beams or bars E E areconnected by means of set-screws H H, by means of which the stationaryburrs are moved closer to or further from the movable bars, as may bedesired.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is

1. The arrangement, in a feed-mill, of a hopper, G, between and feedingtwo sets of burrs, substantially as herein set fort-l1.

2. The combination of the hubs B B, burrs D D, shaft C, and journals bb, all substantially as and for the purposes herein set forth.

3. The combination of the adjustable bars E E, moved by the set-screws HH, the hopper G, and burrs Dl D', all substantially as and for thepurposes herein set forth.

In testimony that I claim the foregoing as my own I affix my signaturein presence of two Witmesses.

Z. S. GRACRAFT. Witnesses:

RosWELL W. HOLMES. SHERMAN LELAND. (59)

